Motor vehicle technical condition improvement as an instrument for reduction of expenses in its maintenance and repair

Innotrans ◽  
2019 ◽  
pp. 62-68
Author(s):  
Marina A. Zhuravskaya ◽  
◽  
Dmitry G. Nevolin ◽  
Aleksey A. Kapitonov ◽  
◽  
...  
Keyword(s):  
Motor Vehicle ◽  
Technical Condition ◽  
Maintenance And Repair

Strategies of maintenance and repair of agricultural machinery

2020 ◽  
pp. 38-48
Author(s):  
Aleksey S. Dorokhov ◽  
Aleksandr V. Denisov ◽  
Aleksey A. Solomashkin ◽  
Valeriy S. Gerasimov
Keyword(s):  
Wear Rate ◽  
Technical Condition ◽  
Research Purpose ◽  
Agricultural Machinery ◽  
Maintenance And Repair ◽  
Wear Rates ◽  
Urgent Task ◽  
Machine Parts ◽  
Current Value ◽  
Agricultural Machines

Modern machines are subject to progressive wear that occurs at different rates, which leads to unpredictable failures that reduce the reliability and durability of machines. The strategy of maintenance and repair is aimed at eliminating these problems. (Research purpose) The research purpose is in analyzing the basic principles of the strategy of maintenance and repair of agricultural machinery in order to ensure control of the technical condition of machine parts. (Materials and methods) When resource diagnostics is used, , the allowable value of the parameter is set in advance for a part . This value is the tolerance that corresponds to a certain wear rate of the part. The tolerance is set based on the condition that if the current value of the controlled resource parameter during the next diagnosis is less than the set value, then such a part at the current value of the wear rate can be finalized until the next inter-control check. Taking into account the wear rate of the same type of parts from the group when determining the allowable wear during their resource diagnostics becomes an urgent task. (Results and discussions) As a result of research, the article presents "Methodology for determining the main indicators of reliability of parts of agricultural machines with different wear rates" and "Methodology for determining the tolerance system of parts of agricultural machines with different wear rates". (Conclusions) The article presents the tolerance system that reduces the probability of failure of machine parts in operation. During resource diagnostics, those parts whose resource parameters exceed the tolerance are rejected.

scholarly journals The method for increasing the efficiency of equipment’s maintenance in railway traction power supply systems

2018 ◽  
Vol 47 (3) ◽  
pp. 39-47 ◽  
Author(s):  
Oleksandr Matusevych ◽  
Valeriy Kuznetsov ◽  
Viktor SYCHENKO
Keyword(s):  
Power Supply ◽  
Operational Reliability ◽  
Technical Condition ◽  
Repair System ◽  
Maintenance And Repair ◽  
Traction Substations ◽  
Electric Equipment ◽  
Traction Power Supply ◽  
Supply Systems ◽  
Traction Power

Purpose. To develop the method for increasing the efficiency of the equipment’s maintenance and repair system, ensuring necessary level of operational reliability of the equipment, safety and reliability of the electric equipment with minimal expenses on operation. Relevance. Aging of the power equipment in railway power supply systems sharply raised a need for assessment of its states and degree of risk for operation outside rated service life. In critical conditions of technological processes and operational modes of the railways it is necessary to increase the equipment’s operational reliability. The scheduled maintenance and repair system whose main technical and economic criterion is the minimum of equipment’s downtimes on the basis of a rigid regulation of repair cycles, in the conditions of market regulations in the field of repair in many cases does not provide the optimal decisions due to insufficient financing. The solution of this problem is possible by improvement of the maintenance and repair system. Under these conditions the main direction for supporting the operational reliability of power electric equipment on TS is a development of the modern methods based on individual supervision over real changes of technical condition of power equipment. Scientific novelty. In this article the authors proposed an integrated approach, on the basis of which can be developed the effective maintenance and repair system for traction power supply systems. Proposed approach allowed to react quickly to changes of service conditions on traction substations, to control the technical condition of power electric equipment under the conditions of uncertainty, to establish interrelation between quality of service and operational reliability of the equipment, to choose a service strategy on traction substations. Practical importance. The validity of the developed method was confirmed by the results of calculations and practically by choosing the optimal maintenance's option for transformer TDTN-25000/150-70 U1 (ТДТН-25000/150-70 У1) on traction power supply substation.

STUDY ON THE RELATIONSHIP BETWEEN VEHICLE MAINTENANCE AND FUEL CONSUMPTION

2021 ◽  
Vol 113 ◽  
pp. 163-172
Author(s):  
Olha SAKNO ◽  
Ievgen MEDVEDIEV ◽  
Tatiana KOLESNIKOVA
Keyword(s):  
Fuel Consumption ◽  
Partial Solution ◽  
Technical Condition ◽  
Clear Correlation ◽  
Technical Solution ◽  
Maintenance And Repair ◽  
Service Lifetime ◽  
Urban Conditions ◽  
The Relationship

A contemporary road vehicle (RV) is a rather complex system, consisting of a large number of subsystems, assemblies, units, and elements (parts). While operating, an RV interacts with the environment, and its elements interact with each other. Consequently, the properties (parameters) of these elements change in the process - hardness, roughness, size, relative position, gapping, etc. A partial solution to the presented problems can be the search for a technique for assessing the RV technical condition by a generalised criterion, which is quite sensitive to changes in the technical state. One of these criteria may be fuel consumption in litres per 100 kilometres. This paper investigates the possibilities of using the fuel consumption indicator as a criterion for assessing the technical condition of the vehicle and the vehicle maintenance and repair technologies have been generalised to obtain a given technical solution. Thus, the possibility of using the fuel consumption indicator as a criterion for assessing the technical condition of the vehicles was explored using the Volkswagen Touran 1.9 TDI operating in urban conditions using a driving cycle. A clear correlation between the fuel consumption and the service lifetime of the vehicle has been established; therefore, it depends on the frequency and quality of the maintenance and repair (MR). The vehicle MR technology has been generalised to obtain a specified technical solution. The process of creating an RV MR Technology model is implemented based on an iterative approach (repetition) with the possibility to specify their features.

On-site investigation and forecast of changes in characteristics of ground water intake in time

2020 ◽  
pp. 66-71
Author(s):  
V. V. Ivashechkin ◽  
◽  
V. I. Kritskaya ◽  
V. N. Anufriev ◽  
A. N. Kondratovich ◽  
...  
Keyword(s):  
Water Intake ◽  
Dynamic Equilibrium ◽  
Residual Life ◽  
Pressure Head ◽  
Site Investigation ◽  
Technical Condition ◽  
Maintenance And Repair ◽  
Water Pipes ◽  
Pump Testing ◽  
Pump Pressure

The on-site investigation of groundwater intakes is carried out to obtain and update the actual parameters of the equipment and structures of a water intake, to optimize its operation modes with an analysis of their changes in time in order to plan maintenance and repair. This article discusses an improved methodology for examining individual elements and structures of groundwater intakes, which allows us to evaluate their current technical condition and to make a predictive calculation of changes in well productivity for the next period of operation based on the solution of the equations of dynamic equilibrium. The technique of clogging assessment allows determining ageing coefficients and approximate residual life of wells; the estimate of the rated pump pressure head reduction due to wear enables the pump testing during its operation at the well and timely replacement of the pump for routine repair; assessment of pipe sculling makes it possible to account for hydraulic resistance of lines connecting the wells to prefabricated water pipes during operation.

MANAGEMENT TECHNICAL CONDITION OF TRANSPORT AND TECHNOLOGICAL MACHINES RUNNING INFORMATION AND TIPS SYSTEM DURING MAINTENANCE AND REPAIR

2016 ◽  
Vol 3 (1) ◽  
pp. 489-493
Author(s):  
Шапошников ◽  
Yu. Shaposhnikov ◽  
Орлов ◽  
R. Orlov
Keyword(s):  
Decision Making ◽  
Repair Process ◽  
Technical Condition ◽  
Technical State ◽  
Diagnostic Equipment ◽  
Maintenance And Repair ◽  
State Management ◽  
Generalized Information ◽  
Maintenance Work

The effectiveness of the control of a technical condition of transport and technological machines is achieved by the inclusion of information and advising systems in the process of maintenance and repair process. The completeness of the information on the technical condition of units and systems to determine the need for and volume of maintenance work and repairs. technical state management is based on generalized information on-board computer and diagnostic equipment, its optimization and decision-making.

scholarly journals Digital technologies used in technical diagnostics, assessment of technical condition, maintenance and repair of mining machines and equipment

2021 ◽  
Vol 2052 (1) ◽  
pp. 012016
Author(s):  
B L Gericke ◽  
A E Sushko ◽  
P B Gericke ◽  
A B Efremenkov
Keyword(s):  
Digital Technology ◽  
Software Package ◽  
Digital Technologies ◽  
Technical Condition ◽  
Industrial Enterprise ◽  
Technical Diagnostics ◽  
Mining Equipment ◽  
Maintenance And Repair ◽  
Technological Space

Abstract The article deals with the organization of a single technological space for technical diagnostics, maintenance, and repair of mining equipment. The digital technology that unites all services related to production, diagnostics of technical condition, maintenance and repair of mining equipment is based on the SAFE PLANT software package, which provides globality, scalability, versatility, integrability, modularity, distribution, and functionality. The article reflects the results of the implementation of the system at an industrial enterprise.

scholarly journals EXPERIENCE IN THE APPLICATION OF ADAPTIVE STRATEGIES FOR MAINTENANCE AND REPAIR OF MILITARY PRODUCTS IN NATO MEMBER COUNTRIES

2021 ◽  
pp. 101-111
Author(s):  
P. Openko ◽  
V. Polishchuk ◽  
M. Mуronіuk ◽  
A. Kozyr
Keyword(s):  
Service Life ◽  
Positive Impact ◽  
Armed Forces ◽  
Adaptive Strategies ◽  
Technical Condition ◽  
Practical Implementation ◽  
Limit Condition ◽  
Maintenance And Repair ◽  
Military Equipment ◽  
Current State

Maintenance of armaments and military equipment, implementation of a set of measures to maintain armaments and military equipment in working order are related to the need to solve the problem of ensuring the specified indicators of their efficiency, especially samples with long service life. Given the current state of the domestic armaments and military equipment park, it is important to study the experience of NATO member states in implementing adaptive maintenance and repair strategies, including maintenance and repair strategies. The aim of the article is to analyze the current state of use of adaptive strategies for maintenance and repair of weapons and military equipment in the world's leading countries with further substantiation based on its recommendations for their practical implementation during the organization of their operation in the Air Force of Ukraine. According to the results of research, a positive impact of the application of maintenance and repair strategy, including by solving the problem of minimizing the cost of operation of weapons and military equipment. As a result, substantiated and proposed the necessary conditions for the application of the strategy of their maintenance and repair, which are in service with the Armed Forces of Ukraine in technical condition, the implementation of which as an alternative to the use of service life (resource) of relevant samples control of the limit condition or the need for maintenance and repair of the product, which are accepted as a result of continuous (periodic) control of the parameters that determine the technical condition.

scholarly journals And probabilistic model to calculate on-the-dejnosti nodes and interfaces of the manipulator

2017 ◽  
Author(s):  
Н.А. Сидоренков ◽  
Б.Г. Мартынов
Keyword(s):  
Service Life ◽  
Operational Reliability ◽  
Technical Condition ◽  
Optimal Frequency ◽  
Maintenance And Repair ◽  
Reliability Models ◽  
Warranty Period ◽  
Hydraulic Manipulators ◽  
Statistical Studies ◽  
Proactive Maintenance

Во время эксплуатации гидроманипуляторов (ГМ) возникает задача продления жизненного цикла ГМ. В настоящее время он составляет при полной нагрузке ГМ от 3 до 5 лет или 6000 моточасов до капитального ремонта. В зависимости от условий работы и обслуживания этот ресурс, по данным ПО «Подъемные машины», может быть израсходован за 8 мес. Руководством по эксплуатации ГМ определены пять видов ТО: ЕТО и четыре номерных. Причем в гарантийных обязательствах определен период работы ГМ до первого отказа. Он соответствует примерно 120 моточасам. Для продления срока службы ГМ до капитального ремонта необходимо перейти от обычной планово-предупредительной системы ТО и ремонта к проактивной системе. Основу проактивной системы ТО и Р составляет правильное управление техническим состоянием механизма с целью повышения его эксплуатационной надежности, определения оптимальной периодичности ТО и Р, что в свою очередь требует полной информации о техническом состоянии механизма и надежности его узлов и сопряжений. Цель проактивной системы ТО и Р – предупреждать отказ узлов и сопряжений механизма. Для реализации этой цели необходима разработка модели надежности ГМ и проведение статистических исследований отказов элементов механизма. Поэтому данная задача является актуальной. В настоящей статье приводится выражение, которое позволит формировать стратегию обслуживания данного типа манипуляторов для продления их срока службы. Цель исследования – разработка вероятностной модели надежности узлов и сопряжений ГМ для решения одной из задач управления техническим состоянием механизма с целью обоснования проактивной системы ТО и Р. During operation of hydraulic manipulators (GM), there arises the problem of extending the life cycle of the GM. Currently, it is under full load UM from 3 to 5 years or 6000 hours before overhaul. Depending on the conditions of operation and maintenance of this resource, according to «Lifting machines», can be used for 8 months. The user manual for the GM identifies five kinds: UTB and four plates. And in a warranty period defined by the work of the GM until the first failure. It corresponds to about 120 hours. To extend the service life of the GM overhaul need to move from conventional preventive system of maintenance and repair to a proactive system. The basis for proactive maintenance and R is the correct management of the technical condition of the mechanism with the purpose of increasing its ex-operational reliability, determining the optimal frequency and R, which in turn requires full information about the technical condition of the mechanism and reliability of its components and interfaces. The purpose of proactive maintenance and repair – to prevent failure of the nodes and interfaces of the mechanism. To achieve this goal it is necessary to develop reliability models of the GM and carrying out statistical studies of failures of elements of the mechanism. Therefore, this task is urgent. In this paper, we provide an expression that will form the servicing strategy for this type of manipulators to extend their service life. The purpose of the study: the development of probabilistic reliability models of the nodes and interfaces of GM to address one of the problems of control of technical condition of the mechanism in order to justify the proactive maintenance and R.

scholarly journals SCIENTIFIC APPROACH TO THE METHODS OF INCREASING THE LIFE CYCLE OF WHEELS OF RAILWAY VEHICLES

2021 ◽  
Vol 1 (38) ◽  
pp. 164-172
Author(s):  
S. Sapronova ◽  
V. Tkachenko ◽  
N. Braikovska ◽  
Y. Zub
Keyword(s):  
Life Cycle ◽  
Traffic Safety ◽  
Technical Condition ◽  
Rolling Stock ◽  
Optimal Parameters ◽  
Maintenance And Repair ◽  
Complete Restoration ◽  
Scientific Approach ◽  
Wheel Profile ◽  
Railway Rolling Stock

The value of the life cycle of rolling stock wheels is determined by the frequency of maintenance, in the process of which the turning is carried out to restore the profiles of the rolling surfaces, or the replacement of completely worn wheels. Traffic safety depends on the technical condition of the wheels of locomotives and wagons. Maintenance and repair of wheelsets accounts for about 30% of all costs of Ukrzaliznytsia's rolling stock repair units. Wheel repair technologies are based on the complete restoration of wheel profiles by turning, using which, their life cycle is reduced, and costs increase by 20% or more. The railways of Ukraine use an outdated, unreasonable, inefficient system of control over the formation of rolling surfaces in operation. Therefore, there is a need to create a scientifically sound approach to methods of extending the life cycle of the wheels of locomotives and wagons while ensuring the safety of railway rolling stock. According to the proposed scientific approach, the wheel profile is restored to optimal parameters, which provides an extended life cycle of wheelsets. As a result of the developed scientific approach the life cycle of wheel pairs will increase by 15… 25% and the expenses of the railway for their repair will considerably decrease.

scholarly journals DEVELOPMENT OF A STATIONARY MONITORING SYSTEM FOR THE TECHNICAL CONDITION OF DYNAMIC EQUIPMENT

2020 ◽  
Vol 2020 (1) ◽  
pp. 75-76
Author(s):  
Oleg Ushakov ◽  
Anatoliy Dement'ev ◽  
Evgeniy Podoplelov
Keyword(s):  
Monitoring System ◽  
Technical Condition ◽  
Technological Equipment ◽  
Maintenance And Repair ◽  
Industrial Enterprises ◽  
Informed Decisions

The article deals with the monitoring of the technical condition of the dynamic technological equipment of industrial enterprises, ensuring informed decisions on its routine maintenance and repair

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